Packages formed of cohesive corrugated paper



Aug. 11, 1964 E. w. PITT ETAL 3,144,131

PACKAGES FORMED OF COHESIVE CORRUGATED PAPER Filed Jan. 4, 1963 UnitedStates Patent C) 3,144,131 PACKAGES FORMED OF COHESIVE CORRUGATED PAPEREdgar W. Pitt, Weston, and Kermit Greene, Newton, Mass., assignors toSt. Regis Paper Company, New York, N.Y., a corporation of New York FiledJan. 4, 1963, Ser. No. 249,363 3 Claims. (Cl. 206-65) This inventionrelates to cartons formed of corrugated paperboard or the like, andparticularly adapted, among other possible uses, for containing forshipment and display, electrical bulbs such as lamps, or other objectshaving stem portions or the like. The invention further involves a novelpackage comprised of such cartons as containing such articles.

In the co-pending application of Edgar W. Pitt, Kermit Greene and PaulAlcaraz, entitled Cohesive Corrugated Laminate and Method for MakingSame, Serial No. 249,458, filed concurrently herewith, there isdisclosed a product comprising single-faced corrugated laminate materialembodying a corrugated sheet such as of paper or paperboard and coatedthroughout the raised and depressed areas of its exposed surface with acoating which is cohesive to like coating material, but being in apartially set-up state and generally non-sticky and non-tacky withrespect to other objects or material, although having a high coefficientof friction in respect thereto. A backing sheet of paper or othersuitable sheet material is adhered to the raised areas of the non-coatedsurface of the corrugated sheet. The coating material and methods andaparatus for applying same may be such as disclosed in US. patents toJennings Nos. 2,432,074 and 2,432,075 and to Copeman et al. No.2,704,732, reference to all of which is hereby made. As an example, thecoating may be applied in the form of an aqueous dispersion of latexwhich is dried to a suflicient degree on the paper sheet to be normallyadherent thereto, but with its exposed surface remaining with thecohesive, non-sticky properties as aforesaid.

The present invention more particularly concerns the construction of asimple and inexpensive cushioning carton or package as aforesaid formedof such cohesive corrugated laminate material.

Various further and more specific objects, features and advantages ofthe invention will appear from the description given below, taken inconnection with the accompanying drawings, illustrating by way ofexample a preferred form of the invention.

In the drawings:

FIG. 1 is a face view of a blank for making a carton or package inaccordance with the invention;

FIG. 2 is an end view of the completed package with one or more objectscontained therein, such for example as lamp bulbs, as shown;

FIG. 3 is a side view of the construction of FIG. 2;

FIG. 4 is a top view of same; and

FIG. 5 is a fragmentary sectional view taken for example along line 55of FIG. 3.

Referring now to the drawings in further detail, the carton blank 10, asshown in FIG. 1, is formed of the single-faced corrugated laminatematerial with the cohesive coating on the exposed corrugated surface asabove referred to. This blank may be formed with crease lines as at11-15 inclusive, about which the successive panels 16-21 inclusive ofthe blank are to be bent or folded in forming the package.

Panel 20, as shown, may be formed with a pair of circular apertures asat 22 for receiving the stems in case the package is to contain forexample a pair of electric lamp bulbs. The ends of the blank may beformed with 3,144,131 Patented Aug. 11, 1964 perforations as at 23,which in the finished package are to coincide, as shown in FIGS. 2 and3, for receiving a hook or other means for suspending the package fordisplay.

As shown in FIGS. 2-4 inclusive, to form a package containing forexample a pair of lamp bulbs as indicated at 24, 25, the several panelsof the carton blank are folded along the various fold lines abovementioned, so that the blank will then form a backing comprised of thepanel 16 and front wall portions comprised of the panels 18-21inclusive, while the panel 17 forms the bottom of the carton. As furthershown in the various figures, in the event, for example, a pair of lampbulbs or other more or less frangible objects are to be contained in thepackage, then the blank may be slit as indicated at 27 to provide for atab 28 which in the finished package may be bent forwardly, as bestshown in FIG. 4, partially to embrace for example the bulb 25, and withthe end portion of the tab interposed between the two bulbs to protectsame from hitting against each other.

As shown in the various figures, the bulb portions of the lamps will beclosely embraced by the back, bottom and front wall panels and thecorrugations coated with the cohesive coating resiliently engaging theglass of the bulbs and thus cushioning same. The stem portions of thebulbs, as indicated at 30, will be lodged in the apertures 20, the upperportions of the bulbs thereby being retained in the desired positions,while the corrugated cohesive-coated surfaces will so resiliently engagethe glass of the bulbs that, because of the high coeficient of frictionof such coating material with respect to the smooth glass, the bulbswill be retained. against being dislodged from the positions as shownduring shipment or display, without ordinarily requiring any endclosures for the package. As further shown, the panel 21 of the cartonblank will, in the finished package, be brought against the upperportions of the back panel 16, and by applying pressure, these portionswill become firmly and cohesively retained together and thus avoid thenecessity of any fastening means or wrapping for completing the package.

As shown in the sectional view of FIG. 5, the upper portion of panel 16and panel 21 may be so brought together that the greater part of thecohesive surfaces thereon will be in cohering engagement and, ifdesired, sufiicient pressure may be applied to flatten the: coheringparts even more than indicated in FIG. 5. The corrugations on the onecohering part may be interspaced with those on the other, if desired,although not necessarily so.

Inasmuch as the panel portions 19, as shown in FIG. 2, are slanted withrespect to the vertical, the packages, as shown, are of a convenientshape for compact packaging in an outer container by placing pairs ofthe packages end to end with the slanting panels 19 of the two packagespositioned to face each other, so that one package is generallycomplementary in shape and position with respect to the other of thepair.

It has been found that, with packages made in accordance with theinvention, the cohered portions at the top thereof will remain securelyand permanently cohered, even though with some aging the cohesiveproperties of the remaining portions of the coating which are exposed tothe air, may become less cohesive than originally, but yet same willstill retain a high coefiicient of friction and thus continue to resistdislodgment of the retained articles embraced thereby.

Although a certain particular embodiment of the invention is hereindisclosed for purposes of explanation, further modifications thereof,after study of this specification, will be apparent to those skilled inthe art to which the invention pertains. Reference should accordingly behad to the appended claims in determining the scope of the invention.

What is claimed and desired to be secured by Letters Patent is:

1. A cushioned package for an article or articles which are providedwith stems or the like, the package being formed of a strip ofsingle-faced corrugated laminate material embodying a corrugated sheetcoated on one surface with a coating cohesive to like coating material,but substantially non-tacky and non-sticky with respect to otherobjects, although having a high coefficient of friction in respectthereto, a backing sheet being adhered to the raised areas of thenon-coated surface of the corrugated sheet, said strip being shaped withpanel portions generally to embrace the articles with the cohesivecorrugated surface resiliently and frictionally engaging and retainingthe articles against slidable displacement, areas on the end portions ofsaid strip being brought into contact and cohered by reason of saidcoating, a panel portion adjacent said cohered areas being apertured forreceiving the article stem or stems.

2. A cushioned package construction for lamp bulbs and the like articleswhich are provided with stems, the package being formed of a strip ofsingle-faced corrugated laminate material embodying a corrugated sheetcoated on its one surface with a coating cohesive to like coatingmaterial, but substantially non-tacky and non-sticky with respect tosuch bulbs and the like, although having a high coeificient of frictionin respect thereto, a backing sheet being adhered to the raised areas ofthe non-coated surface of the corrugated sheet, said strip beingtransversely creased to form panel portions embracing the bulb or bulbswith the cohesive corrugated surface resiliently and frictionallyengaging and retaining same against slidable displacement, areas on theend portions of said strip being brought into contact and cohered byreason of said coating, one of the panel portions being apertured forreceiving the bulb stem or stems.

3. A package containing a plurality of objectstin sideby-side relationand each having substantial three-dimensional bulk, said packagecomprising an area of singlefaced corrugated laminate material embodyinga corrugated sheet with corrugations thereon facing inwardly of thepackage and resiliently engaging the objects and coated throughout thesurfaces of such inwardly facing corrugations with a coating cohesive tolike coating material, but substantially non-tacky and non-sticky withrespect to said objects, although having a high coeflicient of frictionin respect thereto when thus resiliently engaging same, a backing sheetbeing adhered to the raised areas of the non-coated surface of thecorrugated sheet and forming the outer surface of the package, said areaof laminate being creased to form a plurality of interconnected panels,including a back panel covering and extending up beyond the height ofthe backs of the objects, a bottom panel on which the objects rest, afront portion contacting the front of the objects and constituted of atleast two panels extending upwardly from the bottom panel and diagonallyto the back panel respectively, and an additional and upstanding panelconnected at a crease line with the front portion, such additional panelbeing cohered to the portion of the back panel which extends above theobjects, said panels being of dimensions whereby same cooperate insubstantially embracing the back, bottom and front portions of theobjects with the corrugated sheet protectively cushioning the objectsand retaining same against sidewise displacement in the package byreason of resilient frictional engagement therewith.

References Cited in the file of this patent UNITED STATES PATENTS2,281,592 OBrien May 5, 1942 2,744,624 Hoogstoel et al. May 8, 19562,869,720 Mahoney -2 Jan. 20, 1959 3,069,008 Dugre Dec. 18, 1962

3. A PACKAGE CONTAINING A PLURALITY OF OBJECTS IN SIDEBY-SIDE RELATIONAND EACH HAVING SUBSTANTIAL THREE-DIMENSIONAL BULK, SAID PACKAGECOMPRISING AN AREA OF SINGLEFACED CORRUGATED LAMINATE MATERIAL EMBODYNGA CORRUGATED SHEET WITH CORRUGATIONS THEREON FACING INWARDLY OF THEPACKAGE AND RESILIENTLY ENGAGING THE OBJECTS AND COATED THROUGHOUT THESURFACES OF EACH INWARDLY FACING CORRUGATIONS WITH A COATING COHESIVE TOLIKE COATING MATERIAL, BUT SUBSTANTIALLY NON-TACKY AND NON-STICKY WITHRESPECT TO SAID OBJECTS, ALTHOUGH HAVING A HIGH COEFFICIENT OF FRICTIONIN RESPECT THERETO WHEN THUS RESILIENTLY ENGAGING SAME, A BACKING SHEETBEING AHDERED TO THE RAISED AREAS OF THE NON-COATED SURFACE OF THECORRUGATED SHEET AND FORMING THE OUTER SURFACE OF THE PACKAGE, SAID AREAOF LAMINATE BEING CREASED TO FORM A PLURALITY OF INTERCONNECTED PANELS,INCLUDING A BAKC PANEL COVERING AND EXTENDING UP BEYOND THE HEIGHT OFTHE BACKS OF THE OBJECTS,